College offers a "poor" return on investment because students focused on passing their exams and their classes, with no thought on application or any plan to re

College offers a "poor" return on investment because students focused on passing their exams and their classes, with no thought on application or any plan to retain the knowledge they acquired. Thus, any skills or knowledge they gained are only temporary, to be forgotten as soon as they graduate. In this perspective, college can teach as much as they want, but 80% will evaporate.